Grodan SBS Rockwool Grow Cubes | 36MM | 77 Cubes | w/ Tray | Propagation Medium

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Grodan Rockwool is a mineral wool made from molten basalt and limestone rock that is spun into cotton-candy like fibers and then compressed into cubes, blocks or slabs.  Being made from natural rock, Grodan is a mineral based product used in hydroponic growing applications.

Cube Size: 36 x 36 x 40
Hole Size: Pinhole

Grodan SBS Rockwool Grow Cubes | 36MM | 77 Cubes | w/ Tray | Propagation Medium
Grodan SBS Rockwool Grow Cubes | 36MM | 77 Cubes | w/ Tray | Propagation Medium
Grodan SBS Rockwool Grow Cubes | 36MM | 77 Cubes | w/ Tray | Propagation Medium